Chain



FIG. 1 is a perspective view of a chain showing the new design;

FIG. 2 is another perspective view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a back view thereof;

FIG. 5 is a left-side view thereof;

FIG. 6 is a right-side view thereof;

FIG. 7 is a top plan view thereof;

FIG. 8 is a bottom plan view thereof;

FIG. 9 is an enlarged view of the encircled portion in FIG. 1 ;

FIG. 10 is an enlarged view of the encircled portion in FIG. 1 ; and,

FIG. 11 is an enlarged view of the encircled portion in FIG. 1 .

The circular broken lines shown in FIGS. 1, 9, 10 and 11 represent the boundaries of the enlarged view. The curved break lines represents a symbolic break in the length of the chain; the appearance of any portion of the article between the break lines forms no part of the claimed design. All other broken lines illustrate portions of the chain. The broken lines form no part of the claimed design. 

CLAIM The ornamental design for a chain, as shown and described. 